Seiko Cal. 5656 - 440

This Spring Drive model from 1981 features a 34mm Titanium case. It features a Black dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-3804c129a771]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1981

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